Stupid idea. Doctors are incentivised to just give out a sick note to anyone that asks. There's no downside for them if they do that, and if they don't, they get complaints from the public.

It seems likely to me that we will end up with private companies being paid by employers to evaluate your health and determine if you can go off sick. Not the nicest solution but I don't see what other option there is given the level of abuse.

Either that or companies will drastically lower the amount of paid sick leave they give, maybe to zero like in the US. I think that would be even worse.